+++ /dev/null
-/* mszip decompression - based on cabextract.c code from
- * Stuart Caie
- *
- * adapted for Samba by Andrew Tridgell and Stefan Metzmacher 2005
- *
- * (C) 2000-2001 Stuart Caie <kyzer@4u.net>
- * reaktivate-specifics by Malte Starostik <malte@kde.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "includes.h"
-#include "../compression/mszip.h"
-
-/*--------------------------------------------------------------------------*/
-/* our archiver information / state */
-
-/* MSZIP stuff */
-#define ZIPWSIZE 0x8000 /* window size */
-#define ZIPLBITS 9 /* bits in base literal/length lookup table */
-#define ZIPDBITS 6 /* bits in base distance lookup table */
-#define ZIPBMAX 16 /* maximum bit length of any code */
-#define ZIPN_MAX 288 /* maximum number of codes in any set */
-
-struct Ziphuft {
- uint8_t e; /* number of extra bits or operation */
- uint8_t b; /* number of bits in this code or subcode */
- union {
- uint16_t n; /* literal, length base, or distance base */
- struct Ziphuft *t; /* pointer to next level of table */
- } v;
-};
-
-struct ZIPstate {
- uint32_t window_posn; /* current offset within the window */
- uint32_t bb; /* bit buffer */
- uint32_t bk; /* bits in bit buffer */
- uint32_t ll[288+32]; /* literal/length and distance code lengths */
- uint32_t c[ZIPBMAX+1]; /* bit length count table */
- int32_t lx[ZIPBMAX+1]; /* memory for l[-1..ZIPBMAX-1] */
- struct Ziphuft *u[ZIPBMAX]; /* table stack */
- uint32_t v[ZIPN_MAX]; /* values in order of bit length */
- uint32_t x[ZIPBMAX+1]; /* bit offsets, then code stack */
- uint8_t *inpos;
-};
-
-/* generic stuff */
-#define CAB(x) (decomp_state->x)
-#define ZIP(x) (decomp_state->methods.zip.x)
-
-/* CAB data blocks are <= 32768 bytes in uncompressed form. Uncompressed
- * blocks have zero growth. MSZIP guarantees that it won't grow above
- * uncompressed size by more than 12 bytes. LZX guarantees it won't grow
- * more than 6144 bytes.
- */
-#define CAB_BLOCKMAX (32768)
-#define CAB_INPUTMAX (CAB_BLOCKMAX+6144)
-
-struct decomp_state {
- struct folder *current; /* current folder we're extracting from */
- uint32_t offset; /* uncompressed offset within folder */
- uint8_t *outpos; /* (high level) start of data to use up */
- uint16_t outlen; /* (high level) amount of data to use up */
- uint16_t split; /* at which split in current folder? */
- int (*decompress)(int, int); /* the chosen compression func */
- uint8_t inbuf[CAB_INPUTMAX+2]; /* +2 for lzx bitbuffer overflows! */
- uint8_t outbuf[CAB_BLOCKMAX];
- union {
- struct ZIPstate zip;
- } methods;
-};
-
-
-/* MSZIP decruncher */
-
-/* Dirk Stoecker wrote the ZIP decoder, based on the InfoZip deflate code */
-
-/* Tables for deflate from PKZIP's appnote.txt. */
-static const uint8_t Zipborder[] = /* Order of the bit length code lengths */
-{ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
-static const uint16_t Zipcplens[] = /* Copy lengths for literal codes 257..285 */
-{ 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51,
- 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
-static const uint16_t Zipcplext[] = /* Extra bits for literal codes 257..285 */
-{ 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4,
- 4, 5, 5, 5, 5, 0, 99, 99}; /* 99==invalid */
-static const uint16_t Zipcpdist[] = /* Copy offsets for distance codes 0..29 */
-{ 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385,
-513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577};
-static const uint16_t Zipcpdext[] = /* Extra bits for distance codes */
-{ 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10,
-10, 11, 11, 12, 12, 13, 13};
-
-/* And'ing with Zipmask[n] masks the lower n bits */
-static const uint16_t Zipmask[17] = {
- 0x0000, 0x0001, 0x0003, 0x0007, 0x000f, 0x001f, 0x003f, 0x007f, 0x00ff,
- 0x01ff, 0x03ff, 0x07ff, 0x0fff, 0x1fff, 0x3fff, 0x7fff, 0xffff
-};
-
-#define ZIPNEEDBITS(n) {while(k<(n)){int32_t c=*(ZIP(inpos)++);\
- b|=((uint32_t)c)<<k;k+=8;}}
-#define ZIPDUMPBITS(n) {b>>=(n);k-=(n);}
-
-static void Ziphuft_free(struct Ziphuft *t)
-{
- register struct Ziphuft *p, *q;
-
- /* Go through linked list, freeing from the allocated (t[-1]) address. */
- p = t;
- while (p != (struct Ziphuft *)NULL)
- {
- q = (--p)->v.t;
- free(p);
- p = q;
- }
-}
-
-static int32_t Ziphuft_build(struct decomp_state *decomp_state,
- uint32_t *b, uint32_t n, uint32_t s, const uint16_t *d, const uint16_t *e,
- struct Ziphuft **t, int32_t *m)
-{
- uint32_t a; /* counter for codes of length k */
- uint32_t el; /* length of EOB code (value 256) */
- uint32_t f; /* i repeats in table every f entries */
- int32_t g; /* maximum code length */
- int32_t h; /* table level */
- register uint32_t i; /* counter, current code */
- register uint32_t j; /* counter */
- register int32_t k; /* number of bits in current code */
- int32_t *l; /* stack of bits per table */
- register uint32_t *p; /* pointer into ZIP(c)[],ZIP(b)[],ZIP(v)[] */
- register struct Ziphuft *q; /* points to current table */
- struct Ziphuft r; /* table entry for structure assignment */
- register int32_t w; /* bits before this table == (l * h) */
- uint32_t *xp; /* pointer into x */
- int32_t y; /* number of dummy codes added */
- uint32_t z; /* number of entries in current table */
-
- l = ZIP(lx)+1;
-
- /* Generate counts for each bit length */
- el = n > 256 ? b[256] : ZIPBMAX; /* set length of EOB code, if any */
-
- for(i = 0; i < ZIPBMAX+1; ++i)
- ZIP(c)[i] = 0;
- p = b; i = n;
- do
- {
- ZIP(c)[*p]++; p++; /* assume all entries <= ZIPBMAX */
- } while (--i);
- if (ZIP(c)[0] == n) /* null input--all zero length codes */
- {
- *t = (struct Ziphuft *)NULL;
- *m = 0;
- return 0;
- }
-
- /* Find minimum and maximum length, bound *m by those */
- for (j = 1; j <= ZIPBMAX; j++)
- if (ZIP(c)[j])
- break;
- k = j; /* minimum code length */
- if ((uint32_t)*m < j)
- *m = j;
- for (i = ZIPBMAX; i; i--)
- if (ZIP(c)[i])
- break;
- g = i; /* maximum code length */
- if ((uint32_t)*m > i)
- *m = i;
-
- /* Adjust last length count to fill out codes, if needed */
- for (y = 1 << j; j < i; j++, y <<= 1)
- if ((y -= ZIP(c)[j]) < 0)
- return 2; /* bad input: more codes than bits */
- if ((y -= ZIP(c)[i]) < 0)
- return 2;
- ZIP(c)[i] += y;
-
- /* Generate starting offsets int32_to the value table for each length */
- ZIP(x)[1] = j = 0;
- p = ZIP(c) + 1; xp = ZIP(x) + 2;
- while (--i)
- { /* note that i == g from above */
- *xp++ = (j += *p++);
- }
-
- /* Make a table of values in order of bit lengths */
- p = b; i = 0;
- do{
- if ((j = *p++) != 0)
- ZIP(v)[ZIP(x)[j]++] = i;
- } while (++i < n);
-
-
- /* Generate the Huffman codes and for each, make the table entries */
- ZIP(x)[0] = i = 0; /* first Huffman code is zero */
- p = ZIP(v); /* grab values in bit order */
- h = -1; /* no tables yet--level -1 */
- w = l[-1] = 0; /* no bits decoded yet */
- ZIP(u)[0] = (struct Ziphuft *)NULL; /* just to keep compilers happy */
- q = (struct Ziphuft *)NULL; /* ditto */
- z = 0; /* ditto */
-
- /* go through the bit lengths (k already is bits in shortest code) */
- for (; k <= g; k++)
- {
- a = ZIP(c)[k];
- while (a--)
- {
- /* here i is the Huffman code of length k bits for value *p */
- /* make tables up to required level */
- while (k > w + l[h])
- {
- w += l[h++]; /* add bits already decoded */
-
- /* compute minimum size table less than or equal to *m bits */
- z = (z = g - w) > (uint32_t)*m ? *m : z; /* upper limit */
- if ((f = 1 << (j = k - w)) > a + 1) /* try a k-w bit table */
- { /* too few codes for k-w bit table */
- f -= a + 1; /* deduct codes from patterns left */
- xp = ZIP(c) + k;
- while (++j < z) /* try smaller tables up to z bits */
- {
- if ((f <<= 1) <= *++xp)
- break; /* enough codes to use up j bits */
- f -= *xp; /* else deduct codes from patterns */
- }
- }
- if ((uint32_t)w + j > el && (uint32_t)w < el)
- j = el - w; /* make EOB code end at table */
- z = 1 << j; /* table entries for j-bit table */
- l[h] = j; /* set table size in stack */
-
- /* allocate and link in new table */
- if (!(q = (struct Ziphuft *)SMB_MALLOC((z + 1)*sizeof(struct Ziphuft))))
- {
- if(h)
- Ziphuft_free(ZIP(u)[0]);
- return 3; /* not enough memory */
- }
- *t = q + 1; /* link to list for Ziphuft_free() */
- *(t = &(q->v.t)) = (struct Ziphuft *)NULL;
- ZIP(u)[h] = ++q; /* table starts after link */
-
- /* connect to last table, if there is one */
- if (h)
- {
- ZIP(x)[h] = i; /* save pattern for backing up */
- r.b = (uint8_t)l[h-1]; /* bits to dump before this table */
- r.e = (uint8_t)(16 + j); /* bits in this table */
- r.v.t = q; /* pointer to this table */
- j = (i & ((1 << w) - 1)) >> (w - l[h-1]);
- ZIP(u)[h-1][j] = r; /* connect to last table */
- }
- }
-
- /* set up table entry in r */
- r.b = (uint8_t)(k - w);
- if (p >= ZIP(v) + n)
- r.e = 99; /* out of values--invalid code */
- else if (*p < s)
- {
- r.e = (uint8_t)(*p < 256 ? 16 : 15); /* 256 is end-of-block code */
- r.v.n = *p++; /* simple code is just the value */
- }
- else
- {
- r.e = (uint8_t)e[*p - s]; /* non-simple--look up in lists */
- r.v.n = d[*p++ - s];
- }
-
- /* fill code-like entries with r */
- f = 1 << (k - w);
- for (j = i >> w; j < z; j += f)
- q[j] = r;
-
- /* backwards increment the k-bit code i */
- for (j = 1 << (k - 1); i & j; j >>= 1)
- i ^= j;
- i ^= j;
-
- /* backup over finished tables */
- while ((i & ((1 << w) - 1)) != ZIP(x)[h])
- w -= l[--h]; /* don't need to update q */
- }
- }
-
- /* return actual size of base table */
- *m = l[0];
-
- /* Return true (1) if we were given an incomplete table */
- return y != 0 && g != 1;
-}
-
-static int32_t Zipinflate_codes(struct decomp_state *decomp_state,
- struct Ziphuft *tl, struct Ziphuft *td,
- int32_t bl, int32_t bd)
-{
- register uint32_t e; /* table entry flag/number of extra bits */
- uint32_t n, d; /* length and index for copy */
- uint32_t w; /* current window position */
- struct Ziphuft *t; /* pointer to table entry */
- uint32_t ml, md; /* masks for bl and bd bits */
- register uint32_t b; /* bit buffer */
- register uint32_t k; /* number of bits in bit buffer */
-
- DEBUG(10,("Zipinflate_codes\n"));
-
- /* make local copies of globals */
- b = ZIP(bb); /* initialize bit buffer */
- k = ZIP(bk);
- w = ZIP(window_posn); /* initialize window position */
-
- /* inflate the coded data */
- ml = Zipmask[bl]; /* precompute masks for speed */
- md = Zipmask[bd];
-
- for(;;)
- {
- ZIPNEEDBITS((uint32_t)bl)
- if((e = (t = tl + ((uint32_t)b & ml))->e) > 16)
- do
- {
- if (e == 99)
- return 1;
- ZIPDUMPBITS(t->b)
- e -= 16;
- ZIPNEEDBITS(e)
- } while ((e = (t = t->v.t + ((uint32_t)b & Zipmask[e]))->e) > 16);
- ZIPDUMPBITS(t->b)
- if (w >= CAB_BLOCKMAX) break;
- if (e == 16) /* then it's a literal */
- CAB(outbuf)[w++] = (uint8_t)t->v.n;
- else /* it's an EOB or a length */
- {
- /* exit if end of block */
- if(e == 15)
- break;
-
- /* get length of block to copy */
- ZIPNEEDBITS(e)
- n = t->v.n + ((uint32_t)b & Zipmask[e]);
- ZIPDUMPBITS(e);
-
- /* decode distance of block to copy */
- ZIPNEEDBITS((uint32_t)bd)
- if ((e = (t = td + ((uint32_t)b & md))->e) > 16)
- do {
- if (e == 99)
- return 1;
- ZIPDUMPBITS(t->b)
- e -= 16;
- ZIPNEEDBITS(e)
- } while ((e = (t = t->v.t + ((uint32_t)b & Zipmask[e]))->e) > 16);
- ZIPDUMPBITS(t->b)
- ZIPNEEDBITS(e)
- d = w - t->v.n - ((uint32_t)b & Zipmask[e]);
- ZIPDUMPBITS(e)
- do
- {
- n -= (e = (e = ZIPWSIZE - ((d &= ZIPWSIZE-1) > w ? d : w)) > n ?n:e);
- do
- {
- CAB(outbuf)[w++] = CAB(outbuf)[d++];
- } while (--e);
- } while (n);
- }
- }
-
- /* restore the globals from the locals */
- ZIP(window_posn) = w; /* restore global window pointer */
- ZIP(bb) = b; /* restore global bit buffer */
- ZIP(bk) = k;
-
- /* done */
- return 0;
-}
-
-/* "decompress" an inflated type 0 (stored) block. */
-static int32_t Zipinflate_stored(struct decomp_state *decomp_state)
-{
- uint32_t n; /* number of bytes in block */
- uint32_t w; /* current window position */
- register uint32_t b; /* bit buffer */
- register uint32_t k; /* number of bits in bit buffer */
-
- /* make local copies of globals */
- b = ZIP(bb); /* initialize bit buffer */
- k = ZIP(bk);
- w = ZIP(window_posn); /* initialize window position */
-
- /* go to byte boundary */
- n = k & 7;
- ZIPDUMPBITS(n);
-
- /* get the length and its complement */
- ZIPNEEDBITS(16)
- n = ((uint32_t)b & 0xffff);
- ZIPDUMPBITS(16)
- ZIPNEEDBITS(16)
- if (n != (uint32_t)((~b) & 0xffff))
- return 1; /* error in compressed data */
- ZIPDUMPBITS(16)
-
- /* read and output the compressed data */
- while(n--)
- {
- ZIPNEEDBITS(8)
- CAB(outbuf)[w++] = (uint8_t)b;
- ZIPDUMPBITS(8)
- }
-
- /* restore the globals from the locals */
- ZIP(window_posn) = w; /* restore global window pointer */
- ZIP(bb) = b; /* restore global bit buffer */
- ZIP(bk) = k;
- return 0;
-}
-
-static int32_t Zipinflate_fixed(struct decomp_state *decomp_state)
-{
- struct Ziphuft *fixed_tl;
- struct Ziphuft *fixed_td;
- int32_t fixed_bl, fixed_bd;
- int32_t i; /* temporary variable */
- uint32_t *l;
-
- l = ZIP(ll);
-
- /* literal table */
- for(i = 0; i < 144; i++)
- l[i] = 8;
- for(; i < 256; i++)
- l[i] = 9;
- for(; i < 280; i++)
- l[i] = 7;
- for(; i < 288; i++) /* make a complete, but wrong code set */
- l[i] = 8;
- fixed_bl = 7;
- if((i = Ziphuft_build(decomp_state, l, 288, 257, Zipcplens, Zipcplext, &fixed_tl, &fixed_bl)))
- return i;
-
- /* distance table */
- for(i = 0; i < 30; i++) /* make an incomplete code set */
- l[i] = 5;
- fixed_bd = 5;
- if((i = Ziphuft_build(decomp_state, l, 30, 0, Zipcpdist, Zipcpdext, &fixed_td, &fixed_bd)) > 1)
- {
- Ziphuft_free(fixed_tl);
- return i;
- }
-
- /* decompress until an end-of-block code */
- i = Zipinflate_codes(decomp_state, fixed_tl, fixed_td, fixed_bl, fixed_bd);
-
- Ziphuft_free(fixed_td);
- Ziphuft_free(fixed_tl);
- return i;
-}
-
-/* decompress an inflated type 2 (dynamic Huffman codes) block. */
-static int32_t Zipinflate_dynamic(struct decomp_state *decomp_state)
-{
- int32_t i; /* temporary variables */
- uint32_t j;
- uint32_t *ll;
- uint32_t l; /* last length */
- uint32_t m; /* mask for bit lengths table */
- uint32_t n; /* number of lengths to get */
- struct Ziphuft *tl; /* literal/length code table */
- struct Ziphuft *td; /* distance code table */
- int32_t bl; /* lookup bits for tl */
- int32_t bd; /* lookup bits for td */
- uint32_t nb; /* number of bit length codes */
- uint32_t nl; /* number of literal/length codes */
- uint32_t nd; /* number of distance codes */
- register uint32_t b; /* bit buffer */
- register uint32_t k; /* number of bits in bit buffer */
-
- /* make local bit buffer */
- b = ZIP(bb);
- k = ZIP(bk);
- ll = ZIP(ll);
-
- /* read in table lengths */
- ZIPNEEDBITS(5)
- nl = 257 + ((uint32_t)b & 0x1f); /* number of literal/length codes */
- ZIPDUMPBITS(5)
- ZIPNEEDBITS(5)
- nd = 1 + ((uint32_t)b & 0x1f); /* number of distance codes */
- ZIPDUMPBITS(5)
- ZIPNEEDBITS(4)
- nb = 4 + ((uint32_t)b & 0xf); /* number of bit length codes */
- ZIPDUMPBITS(4)
- if(nl > 288 || nd > 32)
- return 1; /* bad lengths */
-
- /* read in bit-length-code lengths */
- for(j = 0; j < nb; j++)
- {
- ZIPNEEDBITS(3)
- ll[Zipborder[j]] = (uint32_t)b & 7;
- ZIPDUMPBITS(3)
- }
- for(; j < 19; j++)
- ll[Zipborder[j]] = 0;
-
- /* build decoding table for trees--single level, 7 bit lookup */
- bl = 7;
- if((i = Ziphuft_build(decomp_state, ll, 19, 19, NULL, NULL, &tl, &bl)) != 0)
- {
- if(i == 1)
- Ziphuft_free(tl);
- return i; /* incomplete code set */
- }
-
- /* read in literal and distance code lengths */
- n = nl + nd;
- m = Zipmask[bl];
- i = l = 0;
- while((uint32_t)i < n)
- {
- ZIPNEEDBITS((uint32_t)bl)
- j = (td = tl + ((uint32_t)b & m))->b;
- ZIPDUMPBITS(j)
- j = td->v.n;
- if (j < 16) /* length of code in bits (0..15) */
- ll[i++] = l = j; /* save last length in l */
- else if (j == 16) /* repeat last length 3 to 6 times */
- {
- ZIPNEEDBITS(2)
- j = 3 + ((uint32_t)b & 3);
- ZIPDUMPBITS(2)
- if((uint32_t)i + j > n)
- return 1;
- while (j--)
- ll[i++] = l;
- }
- else if (j == 17) /* 3 to 10 zero length codes */
- {
- ZIPNEEDBITS(3)
- j = 3 + ((uint32_t)b & 7);
- ZIPDUMPBITS(3)
- if ((uint32_t)i + j > n)
- return 1;
- while (j--)
- ll[i++] = 0;
- l = 0;
- }
- else /* j == 18: 11 to 138 zero length codes */
- {
- ZIPNEEDBITS(7)
- j = 11 + ((uint32_t)b & 0x7f);
- ZIPDUMPBITS(7)
- if ((uint32_t)i + j > n)
- return 1;
- while (j--)
- ll[i++] = 0;
- l = 0;
- }
- }
-
- /* free decoding table for trees */
- Ziphuft_free(tl);
-
- /* restore the global bit buffer */
- ZIP(bb) = b;
- ZIP(bk) = k;
-
- /* build the decoding tables for literal/length and distance codes */
- bl = ZIPLBITS;
- if((i = Ziphuft_build(decomp_state, ll, nl, 257, Zipcplens, Zipcplext, &tl, &bl)) != 0)
- {
- if(i == 1)
- Ziphuft_free(tl);
- return i; /* incomplete code set */
- }
- bd = ZIPDBITS;
- Ziphuft_build(decomp_state, ll + nl, nd, 0, Zipcpdist, Zipcpdext, &td, &bd);
-
- /* decompress until an end-of-block code */
- if(Zipinflate_codes(decomp_state, tl, td, bl, bd))
- return 1;
-
- /* free the decoding tables, return */
- Ziphuft_free(tl);
- Ziphuft_free(td);
- return 0;
-}
-
-/* e == last block flag */
-static int32_t Zipinflate_block(struct decomp_state *decomp_state, int32_t *e)
-{ /* decompress an inflated block */
- uint32_t t; /* block type */
- register uint32_t b; /* bit buffer */
- register uint32_t k; /* number of bits in bit buffer */
-
- DEBUG(10,("Zipinflate_block\n"));
-
- /* make local bit buffer */
- b = ZIP(bb);
- k = ZIP(bk);
-
- /* read in last block bit */
- ZIPNEEDBITS(1)
- *e = (int32_t)b & 1;
- ZIPDUMPBITS(1)
-
- /* read in block type */
- ZIPNEEDBITS(2)
- t = (uint32_t)b & 3;
- ZIPDUMPBITS(2)
-
- /* restore the global bit buffer */
- ZIP(bb) = b;
- ZIP(bk) = k;
-
- DEBUG(10,("inflate type %d\n", t));
-
- /* inflate that block type */
- if(t == 2)
- return Zipinflate_dynamic(decomp_state);
- if(t == 0)
- return Zipinflate_stored(decomp_state);
- if(t == 1)
- return Zipinflate_fixed(decomp_state);
- /* bad block type */
- return 2;
-}
-
-_PUBLIC_ struct decomp_state *ZIPdecomp_state(TALLOC_CTX *mem_ctx)
-{
- return talloc_zero(mem_ctx, struct decomp_state);
-}
-
-int ZIPdecompress(struct decomp_state *decomp_state, DATA_BLOB *inbuf, DATA_BLOB *outbuf)
-{
- int32_t e = 0;/* last block flag */
-
- ZIP(inpos) = CAB(inbuf);
- ZIP(bb) = ZIP(bk) = ZIP(window_posn) = 0;
-
- if (inbuf->length > sizeof(decomp_state->inbuf)) return DECR_INPUT;
-
- if (outbuf->length > sizeof(decomp_state->outbuf)) return DECR_OUTPUT;
-
- if (outbuf->length > ZIPWSIZE) return DECR_DATAFORMAT;
-
- memcpy(decomp_state->inbuf, inbuf->data, inbuf->length);
-
- /* CK = Chris Kirmse, official Microsoft purloiner */
- if (ZIP(inpos)[0] != 'C' || ZIP(inpos)[1] != 'K') return DECR_ILLEGALDATA;
- ZIP(inpos) += 2;
-
- while (!e) {
- if (Zipinflate_block(decomp_state, &e)) {
- return DECR_ILLEGALDATA;
- }
- }
-
- memcpy(outbuf->data, decomp_state->outbuf, outbuf->length);
-
- return DECR_OK;
-}
git.samba.org / sfrench / samba-autobuild / .git / blobdiff